Flames spread rapidly up the canyon, which leads into the Angeles National Forest and San Gabriel Mountain foothills, aerial video from Sky5 showed. Smoke poured off a dry hillside close to homes, with firefighters protecting homes along Terra Vista Way.

Helicopters and the giant Super Scooper dropped water while crews responded on the ground.

The cause of the fire was under investigation.

Less than an hour before the Lake View Terrace blaze broke out, L.A. firefighters knocked down another San Fernando Valley fire, in Granada Hills.